/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.classfile.attribute;

import proguard.classfile.*;
import proguard.classfile.attribute.visitor.AttributeVisitor;
import proguard.classfile.constant.visitor.ConstantVisitor;

/**
 * This Attribute represents an exceptions attribute.
 *
 * @author Eric Lafortune
 */
public class ExceptionsAttribute extends Attribute {
    public int u2exceptionIndexTableLength;
    public int[] u2exceptionIndexTable;

    /**
     * Creates an uninitialized ExceptionsAttribute.
     */
    public ExceptionsAttribute() {}

    /**
     * Creates an initialized ExceptionsAttribute.
     */
    public ExceptionsAttribute(int u2attributeNameIndex, int u2exceptionIndexTableLength, int[] u2exceptionIndexTable) {
        super(u2attributeNameIndex);

        this.u2exceptionIndexTableLength = u2exceptionIndexTableLength;
        this.u2exceptionIndexTable = u2exceptionIndexTable;
    }

    // Implementations for Attribute.

    public void accept(Clazz clazz, Method method, AttributeVisitor attributeVisitor) {
        attributeVisitor.visitExceptionsAttribute(clazz, method, this);
    }

    /**
     * Applies the given constant pool visitor to all exception class pool info entries.
     */
    public void exceptionEntriesAccept(Clazz clazz, ConstantVisitor constantVisitor) {
        for (int index = 0; index < u2exceptionIndexTableLength; index++) {
            clazz.constantPoolEntryAccept(u2exceptionIndexTable[index], constantVisitor);
        }
    }
}
